Final answer:
The distinctive feature of Puebloan groups in contrast to other American Indian groups in Texas is their adobe structures used for accommodation and storage. These multistory buildings were a signature of their sedentary lifestyle and advanced architectural practices.
Step-by-step explanation:
A key feature that made Puebloan groups different than the other American Indian groups of Texas was their D. adobe structures. The Puebloan people, including the Mogollon, Hohokam, and Anasazi, are known for their sophisticated and permanent homes made of adobe and stone. These structures had multiple floors and rooms, resembling modern-day apartment complexes, and served as both living quarters and storage spaces. Additionally, they had ceremonial centers called kivas. The Puebloans engaged in practice of agriculture and had established trade networks, and although they faced pressures such as the 300-year long Great Drought, they managed to adapt and transform, with their descendants becoming the modern Pueblo cultures such as Hopi and Zuni.